# A107857 (b-file synthesized from sequence entry) 1 1 2 1 3 2 4 3 5 7 6 11 7 28 8 45 9 117 10 189 11 494 12 799 13 2091 14 3383 15 8856 16 14329 17 37513 18 60697 19 158906 20 257115 21 673135 22 1089155 23 2851444 24 4613733 25 12078909 26 19544085 27 51167078 28 82790071 29 216747219 30 350704367 31 918155952 32 1485607537 33 3889371025